@font-face {
  font-family: Inter;
  src: url(/fonts/InterVariable.woff2) format("woff2");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --paper: #FEFFFB;
  --panel: #F4F4F0;
  --blue: #014EFE;
  --data-blue: #4D86FF;
  --ink: #111111;
  --muted: #565650;
  --line: #E3E2DE;
  --line-strong: #C9C8C2;
  --fail: #C43D1E;
  --navy: #0C1224;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  --gutter: 20px;
  --max: 1200px;
  color-scheme: light;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.55;
  letter-spacing: .005em;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

a { color: var(--blue); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, button:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
}

code, .mono { font-family: var(--mono); letter-spacing: 0; }
code { font-size: .92em; color: var(--blue); }
b, strong { font-weight: 700; }

.skip {
  position: absolute; left: -9999px; top: 8px;
  background: var(--blue); color: #fff; padding: 8px 12px; z-index: 10;
}
.skip:focus { left: 8px; }

/* Labels: small blue square, uppercase letter-spaced mono */
.label {
  display: flex; align-items: center; gap: 10px;
  margin: 0 0 14px;
  color: var(--blue);
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.sq { display: inline-block; width: 9px; height: 9px; flex: none; background: var(--blue); }
.sq-muted { background: var(--line-strong); }

.hl {
  padding: .02em .14em .06em;
  background: var(--blue);
  color: #fff;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

/* Header */
.top {
  max-width: var(--max);
  margin: 0 auto;
  padding: 18px var(--gutter);
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex; align-items: center; gap: 12px;
  color: var(--ink); text-decoration: none;
  font-size: 21px; font-weight: 750; letter-spacing: -.02em;
}
.brand img { display: block; }
.top-event { margin: 0; font-size: 11.5px; }

main > section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 56px var(--gutter);
}
main > section + section { border-top: 1px solid var(--line); }

h1, h2, h3 { margin: 0; font-weight: 750; }
h1 {
  font-size: clamp(38px, 10vw, 76px);
  line-height: 1.12;
  letter-spacing: -.045em;
  margin-bottom: 22px;
}
h2 {
  font-size: clamp(28px, 6.4vw, 46px);
  line-height: 1.16;
  letter-spacing: -.035em;
  max-width: 22ch;
}
h3 { font-size: 20px; line-height: 1.3; letter-spacing: -.015em; }

.sec-head { margin-bottom: 32px; }
.sec-lede { max-width: 62ch; margin: 18px 0 0; color: var(--muted); }
.rec { color: var(--ink); }

/* Hero */
.hero { display: grid; gap: 36px; padding-top: 40px; }
.lede { font-size: 19px; line-height: 1.55; max-width: 38ch; margin: 0 0 14px; }
.lede b { font-family: var(--mono); color: var(--blue); }
.fine { font-size: 15px; color: var(--muted); max-width: 60ch; margin: 0; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 20px;
  border: 1.5px solid var(--blue);
  background: var(--paper);
  color: var(--blue);
  font-family: var(--mono);
  font-size: 13.5px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  text-decoration: none;
}
.btn:hover { background: #EEF3FF; }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: #0042D9; }

.hero-figure { margin: 0; }
.encounter { display: block; width: 100%; height: auto; max-width: 560px; margin: 0 auto; overflow: visible; }
.hero-figure figcaption { font-size: 13.5px; color: var(--muted); margin-top: 14px; max-width: 52ch; }

/* Hero SVG: default styles are the final state; motion is layered on only when allowed */
.st { fill: var(--blue); font-size: 14px; font-weight: 700; letter-spacing: .12em; }
.st-w1, .st-w2 { opacity: 0; }
.ring { stroke: var(--data-blue); stroke-width: 1.5; opacity: 0; transform-box: fill-box; transform-origin: center; }
.e { stroke-dasharray: 1; stroke-dashoffset: 0; }
.e1 { stroke: var(--data-blue); stroke-width: 2; }
.e-once { stroke: var(--line-strong); stroke-width: 2.5; }
.e2 { stroke: var(--blue); stroke-width: 6; }
.once-note text { fill: var(--muted); font-size: 13px; }
.phone rect:first-child { fill: var(--paper); stroke: var(--ink); stroke-width: 2.5; }
.phone .notch { stroke: var(--ink); stroke-width: 2.5; stroke-linecap: round; }
.phone .glyph { fill: var(--ink); font-size: 22px; font-weight: 750; text-anchor: middle; font-family: Inter, system-ui, sans-serif; }
.phone.pass rect:first-child { fill: var(--blue); stroke: var(--blue); }
.phone.pass .notch { stroke: #fff; }
.phone.pass .glyph { fill: #fff; }
.chip rect { fill: var(--blue); }
.phone.fail .chip rect { fill: var(--fail); }
.chip text { fill: #fff; font-family: var(--mono); font-size: 11.5px; font-weight: 700; letter-spacing: .1em; text-anchor: middle; }
.cnt { fill: var(--blue); font-family: var(--mono); font-size: 13px; text-anchor: middle; }

@media (prefers-reduced-motion: no-preference) {
  .encounter * { animation-duration: 15s; animation-delay: -2.5s; animation-iteration-count: infinite; animation-timing-function: ease-in-out; }
  .st-w1 { animation-name: lbl-1; }
  .st-w2 { animation-name: lbl-2; }
  .st-end { animation-name: lbl-3; }
  .r1 { animation-name: ring-1; }
  .r2 { animation-name: ring-2; }
  .e1 { animation-name: draw-1; }
  .e2 { animation-name: draw-2; }
  .once-note { animation-name: appear-once; }
  .phone.pass rect:first-child { animation-name: phone-pass; }
  .phone.pass .notch { animation-name: notch-pass; }
  .phone.pass .glyph { animation-name: glyph-pass; }
  .chip, .cnt { animation-name: result; }
}

@keyframes lbl-1 { 0%, 38% { opacity: 1; } 40%, 100% { opacity: 0; } }
@keyframes lbl-2 { 0%, 38% { opacity: 0; } 40%, 64% { opacity: 1; } 66%, 100% { opacity: 0; } }
@keyframes lbl-3 { 0%, 64% { opacity: 0; } 66%, 96% { opacity: 1; } 100% { opacity: 0; } }
@keyframes ring-1 { 0%, 6% { opacity: 0; transform: scale(1); } 11% { opacity: .75; } 30%, 100% { opacity: 0; transform: scale(2.8); } }
@keyframes ring-2 { 0%, 40% { opacity: 0; transform: scale(1); } 45% { opacity: .75; } 64%, 100% { opacity: 0; transform: scale(2.8); } }
@keyframes draw-1 { 0%, 9% { stroke-dashoffset: 1; opacity: 1; } 24%, 95% { stroke-dashoffset: 0; opacity: 1; } 100% { stroke-dashoffset: 0; opacity: 0; } }
@keyframes draw-2 { 0%, 43% { stroke-dashoffset: 1; opacity: 1; } 58%, 95% { stroke-dashoffset: 0; opacity: 1; } 100% { stroke-dashoffset: 0; opacity: 0; } }
@keyframes appear-once { 0%, 22% { opacity: 0; } 28%, 95% { opacity: 1; } 100% { opacity: 0; } }
@keyframes phone-pass { 0%, 64% { fill: var(--paper); stroke: var(--ink); } 70%, 95% { fill: var(--blue); stroke: var(--blue); } 100% { fill: var(--paper); stroke: var(--ink); } }
@keyframes notch-pass { 0%, 64% { stroke: var(--ink); } 70%, 95% { stroke: #fff; } 100% { stroke: var(--ink); } }
@keyframes glyph-pass { 0%, 64% { fill: var(--ink); } 70%, 95% { fill: #fff; } 100% { fill: var(--ink); } }
@keyframes result { 0%, 66% { opacity: 0; } 72%, 95% { opacity: 1; } 100% { opacity: 0; } }

/* Try it */
.cards { display: grid; grid-template-columns: minmax(0, 1fr); gap: 14px; }
.card {
  display: flex; flex-direction: column;
  padding: 22px 20px 20px;
  min-width: 0;
  border: 1px solid var(--line-strong);
  background: var(--paper);
}
.card h3 { margin-bottom: 8px; }
.card p { margin: 0 0 14px; font-size: 15.5px; color: #2b2b28; }
.card .label { margin-bottom: 12px; }
.card-muted { background: var(--panel); border-style: dashed; }
.card-muted h3 { color: var(--muted); }
.card-muted .label { color: var(--muted); }
.card-foot { margin-top: auto !important; font-size: 13px !important; }
.muted { color: var(--muted) !important; }
.card .addr { font-size: 13.5px; color: var(--blue); overflow-wrap: anywhere; line-height: 1.5; }
.card .small { font-size: 12.5px; color: var(--muted); overflow-wrap: anywhere; }
.card-link {
  margin-top: auto;
  align-self: flex-start;
  font-family: var(--mono);
  font-size: 13.5px;
  font-weight: 700;
  overflow-wrap: anywhere;
  padding: 6px 0;
}
/* QR codes are filled in at build time; phones tap the link instead */
.qr { display: none; }
.qr svg { display: block; width: 120px; height: 120px; }
.link-row { display: flex; flex-wrap: wrap; gap: 4px 18px; margin-top: auto; }
.link-row .card-link { margin-top: 0; }
.cmd {
  display: flex; align-items: stretch; gap: 0;
  margin: 0 0 12px;
  border: 1px solid #25304a;
  background: var(--navy);
}
.cmd pre { flex: 1; min-width: 0; margin: 0; padding: 12px 14px; overflow-x: auto; }
.cmd code { color: #DCE6FF; font-size: 13px; white-space: pre-wrap; overflow-wrap: anywhere; }
.copy {
  flex: none;
  border: 0; border-left: 1px solid #25304a;
  background: transparent; color: var(--data-blue);
  font-family: var(--mono); font-size: 12px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
  padding: 0 14px; min-width: 72px; cursor: pointer;
}
.copy:hover { color: #fff; }
.status-note { margin: 22px 0 0; font-size: 15px; color: var(--muted); max-width: 70ch; }

/* How it works */
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.step {
  display: grid;
  grid-template-columns: 96px 1fr;
  grid-template-areas: "art n" "art h" "art p";
  column-gap: 18px;
  align-items: start;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}
.step:last-child { border-bottom: 1px solid var(--line); }
.step-art { grid-area: art; width: 96px; height: auto; }
.step-n { grid-area: n; margin: 0 0 4px; color: var(--blue); font-size: 13px; font-weight: 700; letter-spacing: .1em; }
.step h3 { grid-area: h; margin-bottom: 6px; }
.step p:last-child { grid-area: p; margin: 0; font-size: 15.5px; color: #2b2b28; }
.step p b { font-family: var(--mono); color: var(--blue); }
.step-art .ln { fill: none; stroke: var(--blue); stroke-width: 2.5; stroke-linejoin: round; stroke-linecap: round; }
.step-art .ln-b { fill: none; stroke: var(--blue); stroke-width: 3.5; stroke-linecap: round; stroke-linejoin: round; }
.step-art .ln-w { fill: none; stroke: #fff; stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.step-art .dash { stroke-dasharray: 4 5; }
.step-art .fill { fill: var(--blue); }
.step-art .t { fill: var(--blue); font-family: var(--mono); font-size: 16px; font-weight: 700; }
.step-art .small-t { font-size: 11px; font-weight: 500; }
.after-steps { margin: 22px 0 0; max-width: 60ch; font-size: 16px; }

/* Components */
.comp-map { display: grid; gap: 14px; }
.comp-group { border: 1px solid var(--line-strong); padding: 20px; }
.comp-new { border: 2px solid var(--blue); }
.comp-old { background: var(--panel); }
.comp-old .label { color: var(--muted); }
.comp { padding: 14px 0; border-top: 1px solid var(--line); }
.comp:first-of-type { border-top: 0; padding-top: 4px; }
.comp h3 { font-size: 22px; margin-bottom: 4px; }
.comp h3 a { color: var(--ink); text-decoration-color: var(--blue); }
.comp p { margin: 0; font-size: 15.5px; }
.comp .tag { margin-top: 6px; font-size: 12px; color: var(--muted); }

/* Rule comparison */
.table-wrap { overflow-x: auto; border: 1px solid var(--line-strong); margin-bottom: 16px; }
.cmp { width: 100%; min-width: 0; border-collapse: collapse; font-size: 15px; }
@media (max-width: 719px) {
  .cmp thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
  .cmp, .cmp tbody { display: block; }
  .cmp tbody tr { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-bottom: 1px solid var(--line); }
  .cmp tbody th { grid-column: 1 / -1; border-bottom: 0; padding-bottom: 4px; }
  .cmp td { border-bottom: 0; padding-top: 6px; display: flex; flex-direction: column; justify-content: space-between; }
  .cmp td::before { content: attr(data-label); display: block; margin-bottom: 4px; font-family: var(--mono); font-size: 10.5px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); white-space: normal; }
  .cmp td.full::before { color: var(--blue); }
  .cmp caption { display: block; }
}
.cmp caption { caption-side: bottom; text-align: left; padding: 10px 14px; font-size: 13px; color: var(--muted); border-top: 1px solid var(--line); }
.cmp th, .cmp td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.cmp thead th { font-family: var(--mono); font-size: 11.5px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); background: var(--panel); }
.cmp tbody th { font-weight: 600; }
.cmp td { font-size: 16px; white-space: nowrap; }
.cmp thead th.full { background: var(--blue); color: #fff; }
.cmp td.full { color: var(--blue); font-weight: 700; background: #EEF3FF; }
.cmp tbody tr:last-child th, .cmp tbody tr:last-child td { border-bottom: 0; }

.replay { margin: 36px 0 0; }
.replay-img { display: block; border: 1px solid var(--line-strong); }
.replay-img img { display: block; width: 100%; height: auto; }
.replay figcaption { display: flex; flex-direction: column; align-items: flex-start; gap: 14px; margin-top: 14px; font-size: 15px; color: var(--muted); }

/* Source */
.repos { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; border-top: 1px solid var(--line); }
.repos li { border-bottom: 1px solid var(--line); }
.repos a { display: flex; flex-direction: column; gap: 2px; padding: 16px 0; text-decoration: none; color: var(--ink); }
.repos a .mono { color: var(--blue); font-weight: 700; font-size: 16px; }
.repos a span:last-child { font-size: 15px; color: var(--muted); }
.repos a:hover .mono { text-decoration: underline; }

/* Trust */
main > section.trust {
  max-width: none;
  background: var(--navy);
  color: #fff;
  padding-left: max(var(--gutter), calc((100% - var(--max)) / 2 + var(--gutter)));
  padding-right: max(var(--gutter), calc((100% - var(--max)) / 2 + var(--gutter)));
}
.trust .label { color: #DBE3F7; }
.trust .sq { background: var(--data-blue); }
.trust-line { font-size: clamp(20px, 3.4vw, 28px); line-height: 1.4; font-weight: 600; letter-spacing: -.015em; max-width: 48ch; margin: 0 0 18px; }
.trust-caveat { font-size: 17px; line-height: 1.5; color: #DBE3F7; max-width: 62ch; margin: 0 0 18px; }
.trust a { color: var(--data-blue); font-family: var(--mono); font-size: 14px; font-weight: 700; }
.trust a:focus-visible { outline-color: #fff; }

/* Footer */
.foot {
  max-width: var(--max); margin: 0 auto; padding: 28px var(--gutter) 40px;
  display: flex; flex-direction: column; gap: 10px;
  font-size: 13.5px; color: var(--muted);
}
.foot p { margin: 0; max-width: 70ch; }
.brand-foot { font-size: 16px; gap: 10px; }

@media (min-width: 720px) {
  :root { --gutter: 40px; }
  body { font-size: 18px; }
  main > section { padding-top: 80px; padding-bottom: 80px; }
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .qr { display: block; margin: auto 0 10px; }
  .qr + .card-link, .qr + .link-row { margin-top: 0; }
  .step { grid-template-columns: 140px 1fr; column-gap: 28px; }
  .step-art { width: 140px; }
  .comp-map { grid-template-columns: 1fr 1.4fr; }
  .replay figcaption { flex-direction: row; align-items: center; justify-content: space-between; }
  .repos { grid-template-columns: repeat(2, 1fr); column-gap: 40px; }
  .repos li:nth-child(-n+2) { border-top: 0; }
}

@media (min-width: 1040px) {
  .hero { grid-template-columns: 1.05fr 1fr; align-items: center; gap: 56px; padding-top: 72px; padding-bottom: 88px; }
  .cards { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .steps { grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0 22px; }
  .step {
    grid-template-columns: 1fr;
    grid-template-areas: "art" "n" "h" "p";
    border-bottom: 0 !important;
    border-top: 2px solid var(--blue);
    padding-top: 18px;
  }
  .step-art { width: 100%; max-width: 150px; margin-bottom: 14px; }
}